I haven't heard a thing either. While it's possible DC might follow the 'Legends of Tomorrow' route I would be sceptical as in doing so they limit the potential of the Justice Society's universe. The whole Rebirth brand has been about restoring properties to their best, if the decision taken was to follow the 'Legends' route then what we will get won't be any more different to the Earth-2 outing they so successfully botched and squandered through indifference and ineptitude...

Embrace the Justice Society's world and legacy DC, don't be afraid of it.

Politics, Power, and The Black Panther. A Commentary On Wakandan outlook and Monarchy, By Jeffrey Kahan.